Integration Engineer

The Big Jobsite; León; Presencial; EUR 45.000 - 65.000; Jornada completa

Descripción de la vacante

The Big Jobsite is seeking an Integration Engineer in Spain to transform bespoke onboarding into a self-serve configuration, by building and maintaining connectors for custodial data, CRM, and financial planning tools. You will focus on resilience against unreliable APIs and data reconciliation to ensure accurate platform figures.

You should have strong Python and SQL skills, a track record with third-party integrations, and a pragmatic approach to failure modes, retries, and schema changes.

Formación

• Must have backend engineering experience with real integration work.
• Experience with undocumented, inconsistent, or rate-limited third-party APIs.
• Strong focus on fault-tolerance: retries, partial data, and data reconciliation.

Responsabilidades

• Design, build, and maintain integration connectors for custodial data, CRM, and planning tools.
• Address failure modes: retries, partial data issues, and silent schema changes.
• Make onboarding more self-serve by improving connectors and tooling to reduce manual engineering hours.

Conocimientos

Python

SQL

API integration

Descripción del empleo

Every firm we onboard arrives with its own custodian, its own CRM and its own back office app. Today each of those is bespoke work. Your job is to make it configuration — so the eleventh firm takes hours rather than the days the first one took.

Descubra más sobre las tareas diarias, las responsabilidades generales y la experiencia requerida para esta oportunidad desplazándose hacia abajo ahora.

The role The real deliverable is not connections built. It is connections a non-engineer can configure. You succeed when you are no longer needed for the standard case — which is an unusual thing to ask of a role, and the reason it is interesting.

What you will own The connectors: custodial data, CRM, financial planning tools — building them, maintaining them, and making them resilient to the ways external systems misbehave. Data that reconciles. In wealth management a wrong number is a regulatory problem, not a bug, and your connectors are upstream of every figure the platform produces.

Turning the bespoke into the standard: configuration over code, so onboarding stops being an engineering project.

Protecting the roadmap. Without this role, onboarding work lands on whoever is nearest and product development stops.

What we are looking for Must have Backend engineer with real integration scars — you have worked with third‑party APIs that were undocumented, inconsistent, rate‑limited, or all three. You think about failure modes first: retries, partial data, silent schema changes, reconciliation breaks. Strong Python and SQL. You build tooling for other people instinctively rather than keeping the knowledge in your head.

Strong plus Financial data — custodial feeds, positions, transactions, performance. If you have handled these, say so early. Experience turning a services‑heavy onboarding into a self‑serve product.

You do not need Frontend skills. Someone else builds the configuration UI; you make it possible.

What success looks like Engineering hours per firm onboarded trend down, onboarding after onboarding. A growing share of new firms are served by connectors that already exist. Time to first reconciled data set shrinks to something we can promise a client.

How we hire A conversation about the worst integration you have dealt with and what you did about it. A paid practical exercise against a realistic messy data source. xqziphu A working session with our engineering team.

Integration Engineer • Marzán, Provincia de León, Spain